Gear box and drive for aeroplane-propellers



G. HRIB.

GEAR BOX AND DBIVE'FOR AEROPLANE PROPELLERS.

APPLICATION FILED FEB. 2, I92].

1,377483@ Patented May 10, 1921.

2 SHEETS-SHEET 1- FIGJ 60 rye H 7466 a. HRIB. v GEAR BOX AND DRIVE FOR AEROPLANE PROPELLERS.

APPLICATION FILED FEB. 2| 1921.

Patented May 10, 1921.

. 5 n x 2 /fl K "L A 8% Rm 8 A 7 7 1 FIG.4'.

. and 'Drives. for Aeroplane-Propellers, of which the followin PATENT OFFICE.

UNITED: STATES GEORGE mus, or smrson, wnsr VIRGINIA.

v G-IElAII:'t IB() X AN]?v DRIVE FOR AEROZPLANE-PBOBELLERS.

"To all-whom it concern:

Be it known that I, GEORGE HRIB, a citizen of Czechoslovakia, residing at Simpson, in the county of Taylor and'State of West Virginia, have invented certain new and useful Improvements in Gear Boxes is a specification.

. This invention re ates to certain new and useful improvements in a drivinggear "for 'a horizontal propeller for aeroplanes with a box for containing the gearing and has particular reference to the particular dis-e positionof the gears in a train for 'obtain* a position for engagementwith the .blades to mg the maximum speed of rotation'of the prigaelling blades from the power employed.

further object of the invention is to provide a gear drive for a horizontally dislposed propeller for an aeroplane with a ver latch device adapted to be moved to a hold the propeller stationary when the same is out of use.

. ing the horizontal peller,

With the above and other objects in view, the present invention consists in the novel combination and arrangement of parts hereinafter more fully described and shown in the accompanying .drawings, in which like racters indicate correspondingreference cha parts throughout the several views.

In the drawings,

Figure 14s a fragmentary side' elevational view, partly in section of an aer'oplane c0n-' structed in accordancewith the present invention with the lever latch device for holdpropeller stationary moved to its inoperative position as indicated by dotted lines.

' Fig. 2 is a top plan tion shown in Fig. 1," y 4 Fig. 3 is afragmentary elevationalview partly in section showing the gearcasing,

tram of gearing therein and the connections between the train ofgearing .andthe vertical shaft supporting the horizontal pro- Fig. 4 is a detail sebtional view taken on line DZ-IV of Fig. 3,

Fig.5 is a detail sectional viewon line vv of Fig. '4,

Fig. 6 is 'a horizontal sectional view taken Spe'ciflcation 01 Letters Patent.

Application filed February 2, 1921.

view of thefconstruc- Patented v May 19, 1921'. Serial No. 441,872.

through the supporting stand for the horizontal propeller shaft showing the bracket- -mounting for horizontal propeller stationary, and

the lever device to hold the Fig. 7

pair of vertical standards 6 and 7 having.

.anchoring'feet 8 secured to the fuselage 1 with the upper, end thereof connected by a strap clamp 9. A vertical shaft 10 is jour is a horizontal sectional view simi 'lar to Fig. 6 showing the sliding guide for naled in grooved bearings 11 in the standard sections 6 and] propeller 12 at the upper end thereof, the grooved bearings 11 being enlarged adjacent their lower ends as at 13 to accommodate the worm 14 carried by the shaft 10while the standard section'7 has a side opening slot 15 shown more clearly in Figs. 3 to 5 compresently to appear.

from the motor 3 to the'worm 14 of the shaft 10, the same being located within a box casing .16 having a lateral lnclosing portion 17 for the adjacent end of the power shaft 4. The powershaft 4 and driven A tram of gearing communicates motion and carries a horizontal .municating with the worm 1e for purposes shaft 18 of the gearing train are mounted in spaced bearings '19 with an intermediate clutch device 20 shifted "by the lever 21 pivoted to the box extension 17 as shown in Figs. land 3. A shaft 22 is journaled in f the casing 16 and has fixed to one end 'thereof adjacent the vertical standard, a

worm wheel 23 while the other end of the shaft 22 carries a gear wheel 24 that 1s m constant mesh with the gear wheel 25 upon the end of the driven shaft 18 that extends into the box casing 16. A second shaft 26 is journaled inthe side walls of the box casing 16 at right angles to the shaft A and beneath the same, the shaft. 26 carrying a small worm 27 in mesh with the largeworm 23 upon the shaft 22 while a larger worm wheel 28 is fixed to the shaft 26 and extends through the side opening 15 in the standard section 7 in engagement with the worm 14 upon the shaft 10.

I The forward propulsion of the aeroplane is effected by the forward propeller 5 while the elevating movement of" the plane is .eflected by the horizontal propeller 12. By shifting the clutch device 20, the train of gearing is thrown into and out of engagement with the power shaft 4; and the gearingtrain being. connected with the vertical shaft 10 of the worm 14 and worm wheel 28, the shaft 10 and propeller 12 carried thereby are revolved.

When the trainof gearing is-disconnect ed from the engine shaft 4c, the horizontal propeller 12 is maintained against rotative movement by the lever 29 pivoted to the bracket 30 adjacent the upper end of the standard section 6 with the upper end of the lever being angularly directed and forked as at 31 for inclosing one of the .blades of the propeller 12 as shown in Fig.

2. The lower end of the lever 29 extends through a slotted guide 32 carried by the lower end of the standard section 6 with the latch device 33'upon the lower end of the lever engaging in notches upon the slotted guide for holding the propeller control 1ever in its adjusted positions, When made in the form, combination and arrange I ment of parts herein set forth without departing from the spirit and scope of the invention as claimed. i

What is claimed as new is:

1; A propeller shaft drive for aeroplanes comprising a vertical standard, a shaft journaled in said standard, a propeller upon the upper end of said shaft, a worm fixed to said shaftwithin the standard, said stand= ard-having a side opening therein exposing T the worm and a train of gearing including a worm wheel extending into said opening for engagement with said worm.

2. A propeller shaft drive for aeroplanes comprising a vertical standard, a shaft journaled in said standard, apropeller upon the upper end of said shaft, a worm fixed'to he vertical shaft 10 is disconnected from ihe said shaft within the standard, said standard having a side opening therein exposing the worm, a gear casing supported adjacent said standard, a pair of crossed shafts journaled in said casing, a pair of worm wheels fixed to one of said shafts with one of said wheels'extending into the standard opening for engagement with the worm, a worm fixed to the other shaft in engagement with one of the worms upon the first named shaft, a gear carried by the last named shaft and a driven shaft carrying a gear in mesh with the aforesaid gear.

3. A propeller shaft drive for aeroplanes comprising a vertical standard, a shaft journaled in said standard,- a propeller upon the upper end of said shaft, a worm fixed to said' shaft within the standard, said standard having a side opening therein exposing the worm, a gear casing supported adjacent said standard, a pair of crossed shafts journaled in said casing, a pair of worm wheels fixed toone of said shafts'with one of said wheels extending into the standard opening for engagement with the worm, a worm fixed to the othershaft in engagement with one of the worms upon the firstnamed shaft, a ear carried by the last named shaft, a driven shaftcarrying gear in mesh with the aforesaid gear, a motor, and clutch devices connecting the shaft of the motor to the driven shaft 4. A propeller shaft drive for aeroplanes comprising a vertical-standard, a shaft journaled in said standard, a propeller upon the upper end of said shaft, a worm fixed to said shaft within the standard, said standard. having a side opening therein exposing the worm, a gear casing supported adjacent said standard, a pair of crossed shafts journaled in said casing, a pair of worm wheels fixed to one of said shafts with one of said one of the worms upon the first named shaft,,a' gear carried by the last named shaft, a driven shaft carrying-a gear, in mesh with the aforesaid gear, and a lever pivoted to said standard adapted to be moved to engaging position with said pro-' peller, for holding the same against rotation. 1 i

5. A propeller shaft ,drive for aeroplanes comprising a vertical standard, a shaft j ournaled in said standard, a propeller upon the upper end of said shaft, a worm fixed to said shaft within the standard, said standard having a side opening therein exposing vthe worm, agear casing supported adjacent said standard, a pair of crossed shafts journaled in said casing, a pair of worm wheels fixed to one of said shafts 'withone of said wheels extending into the standard'opening forgengagement with the Worm, a 'worm t9 inclose the propeller bladeto hold the fixed to "the other shaft in engagement with same against rotation. 1 10 one of the Worms upon the first named In testimony whereof I afiix my signature sha ft, a gear carried by the last named in presence of two Witnesses.

5 shaft, a driven shaft carrying a gear in a GEORGE HRIB. mesh'with the aforesaid gear", and a lever- Witnesses: e

- pivoted to said standard and having an up- WV. H. WOLVERTON' 7 per forked extension adapted to be naoved I 'GEORGE LYESO. 

